Hoisting mechanism.



PATENTED OCT. 16, 1906.

H. G. JOHNSTON. HOISTING MECHANISM.

APPLICATION FILED APB-19.1906.

2 SHEETS-SHEET 1.

nuanfo'c with eases PATENTED OCT. 16, 1906.

H. G. JOHNSTON. HOISTING MECHANISM.

APPLIOATION FILED APR.19.1906.

2 SHEETS-SHEET 2.

Hlll llu'illl III" II IIIIIIIIIIJII attozmu 'UMT STATE$ HORACE e. JOHNSTON,

OF C'ORSICANA', raxAs.

1 HOISTING (MECHANISM,

it all whom it may concern:

Be it known that I, IIORACE G. JonNs'roN,

' a citizen of the United States, residing at Corsicana, in the county. of N avarro and State of Texas, have invented certain new and useful Im rovements in I-Ioisting Mechanism; and do hereby declare the following to be -a full, clear, and exact description of ,the invention, suchas will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to hoisting devices for well construction, and especially for use in connection with oil-wells.

hoist embodying improved means for imparting a change of speed to the hoisting device. A further object of the invention 1s to provide a sand-reel adapted to be placed upon the hoisting-shaft andto be removed there,-

With this and other objects in view the invention consists of certain other novel constructions, combinations, and arran ements of parts, 'as'will be hereinafter more ully deser1bed and claimed. s

journa In the drawings, Fi ure 1 is a perspective view of the 1m roved iolstlng device; Fig.

' 2 is a view of t 1e hoisting device in side elevation. Fig. 3 isa view of the hoisting'devieein end elevation as seen along the arrow 3. Fig. 4 is a diametrical sectional view of the sand-reel uscd in' combination with this machine. i

Like characters of reference designate corresponding parts throughout the several views. V In its improved embodiment the device forming the subject-matter of this application comprises the usual frame 10, erected in any approved manner and upon which is ed a driving-shaft 11, as by the pillow-blocks 12. The driving-shaft 11 is provided adjacent its middle point with the ste ped sprocket presenting the sprocketdis s 12 and 13. The shaft 11 is operated from any approved source, as the conventional engine 14, provided with the powershaft 15, upon which is mounted a stepped s rocket pre enting the disks 16 and 17 the isk 16 being in alinement with the disk 13. and the disk 17 in alinement with the disk. 12'. Upon the two stepped sprockets is mounted a sprocket-chain 18, said sprock- Bpeeifleation of Letters Patent.

Application filed April 19, 1906. Sc -1111110. 812.678.

retested 0a. 1e, 1906.

ets being of suchdiameter-relative to each other that the said chain 18 will operate Without change of length upon the sprockets -13 and 16 or thesprockets 12 and 17. Below the shaft 11 is journalcd a'reel-shaft 19 and o erated from the shaft 11 by means of a spree e t-chain 20, passing over the sprocket 21 upon the shaft 11, and a sprocket-22 upon the shaft 19, and through the medium of a clutch 23- upon the said shaft, which is operated by the lever '24. .The shaft 19 is provided with the usual hoisting-dru'm-25 and brake-disk 26, u on which is operatively mounted a brakeand 27, operated by the lever 28. p

At one end the shaft 19 is extended, and thereon is mounted a sand-reel 29 of any aproved form, but preferabl comprising a ub 30, provided with a Sll( ing key 31 and with peripheral flan es 32, upon which are secured .annular dis s 33 in any ap roved manner, as by the rivets ends of the sand -reel. I

The sand-reelbyreason of the key 31 is arranged to be removably placed upon-the shaft 19 when required for use and to be removed therefrom when a sand-reel is not required.

In operation it is found desirable to impart a diil'erent speed to the hoisting-drum when raising the apparatus from shallow or deep wells, for which purpose the stepped.

34, and form ngzthe 1. In a device of the class described, the

combination with a driving-shaft, of a stepped sprocket mounted upon said shaft, a power-shaft provided with a enacting stepped sprocket, a reel-shaft,.1neans for rotating the reel-shaft from the drivingshalt and a removable sand-reel mounted upon said reel-sh aft.

2. In a device of the class described, a driving-shaft, a stepped sprocket mounted upon said shaft, a enacting stepped sprocket positively driven, means connecting the two stepped spro journaled in t ing-shaft and extended at one end beyond the reel andthebearing, means for drnn'ng the reel-shaft sand-reel removably mounted upon the ex--' tended end of the reel-shaft.

okets, a bearing, a reel-shaft In testimony whereof I aifix my signature he bearmg ad acent the dr1v- 1n presence of two witnesses.

HORACE Gr. JOHNSTON.

Witnes ses;

. 'W. J. CHENEY,

R. N. ELLIOTT,

from the driving-shaft, and a 

